Dealer says they can turn off Forward Attention Warning with Smart Cruise Control... is it true?

Hyundai Cars and Models Forum Hyundai Santa Fe
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In a different Santa Fe forum, there’s a post from Huey who has an appointment on Monday to have a dealer disable the FAW system when using SCC due to the warning activating because of sunglasses. Here’s what the post says:

…I filed a complaint with Hyundai customer service about the FAW system and received a call from one of their representatives. He set up an appointment with a local dealer who says they can turn the system off completely. I told them that I turned it off through the setup/vehicle/driver assistance options, but it still works. However, the dealer says they can turn it off, so I have an appointment on Monday to try it. I’m not sure what they’ll do, but I’ll update you if anything changes after the appointment.

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I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

I have prescription polarized glasses, and they cause this issue about 75% of the time. It’s really annoying.

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@GuyBolding
That’s interesting. My prescription polarized glasses work fine. My prescription is low, but I have bad astigmatism.

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SonataSavvyOwner said:
@GuyBolding
That’s interesting. My prescription polarized glasses work fine. My prescription is low, but I have bad astigmatism.

I have a high prescription with bad astigmatism too. My lenses are transitions because I’m getting older now.

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@GuyBolding
Others with transitions lenses report the same problem. They block IR light.

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

I’ve had this issue with my Maui Jims when my arm blocks the camera.

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@HyundaiEnclave
That’s interesting. I have two pairs of Maui Jims, both polarized, neither mirrored. One pair is brown (no correction) and the other is prescription rose with a little tint on top. Neither triggers the warning. It’s confusing. Are your sunglasses mirrored?

Edit: Both of mine have large lenses, so the frame doesn’t get in the way.

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@carhero
It’s the mirrored ones that cause the issue. Even my iPhone wouldn’t Face ID with them on until a couple of months ago.

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HyundaiEnclave said:
@carhero
It’s the mirrored ones that cause the issue. Even my iPhone wouldn’t Face ID with them on until a couple of months ago.

I only have mirrored sunglasses, and it never happens with mine. I think your seating position might make it worse though.

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HyundaiEnclave said:
@carhero
It’s the mirrored ones that cause the issue. Even my iPhone wouldn’t Face ID with them on until a couple of months ago.

I use Smith’s polarized sunglasses, and I’ve never had any issues.

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

Any glasses or sunglasses that block IR light can cause this. Progressives do, and some have special coatings that block it. So, two people could have identical glasses, but one could have a coating that causes the issue. I’ve also heard that prism correction can confuse the FAW system.

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@carhero
I was thinking about the mirror coating on them haha.

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Lucas said:
@carhero
I was thinking about the mirror coating on them haha.

Haha! Yes, that too. I’ve been looking through forums to see what people are saying, and some mentioned that adjusting the steering wheel position fixed the warning.

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

My Knockarounds don’t trigger the warning, but my Ray-Bans and regular glasses do.

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

Same here, no issues with my sunglasses.

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

It’s just about the different plastics, dyes, and coatings. FAW uses infrared light, which is in the 800-1000nm range. Sunglass makers don’t usually design lenses to let IR light through, so it’s more about the materials used.

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

Do you have a 2024+ Santa Fe with sensors on the steering column?

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Lucas said:
I wonder what kind of sunglasses cause this issue. I use polarized ones and don’t have any problems.

I have shatterproof polycarbonate sunglasses, and they trigger the warning every time. I can’t use cruise control if it’s sunny and I need my sunglasses. It’s ridiculous, but I refuse to wear other sunglasses because of the risk of injury in an accident.

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@Amelia
It may not be the polycarbonate, but the tinting or coating(s) on them.